/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: AsynchronousTask.hxx,v $
 *
 *  $Revision: 1.2 $
 *
 *  last change: $Author: kz $ $Date: 2006-04-26 20:46:22 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

#ifndef SD_ASYNCHRONOUS_TASK_HXX
#define SD_ASYNCHRONOUS_TASK_HXX

namespace sd { namespace tools {

/** Interface for the asynchronous execution of a task.  This interface
    allows an controller to run the task either timer based with a fixed
    amount of time between the steps or thread based one step right after
    the other.
*/
class AsynchronousTask
{
public:
    /** Run the next step of the task.  After HasNextStep() returns false
        this method should ignore further calls.
    */
    virtual void RunNextStep (void) = 0;

    /** Return <TRUE/> when there is at least one more step to execute.
        When the task has been executed completely then <FALSE/> is
        returned.
    */
    virtual bool HasNextStep (void) = 0;
};

} } // end of namespace ::sd::tools

#endif